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Finding the Fourth Proportional to 639,570.64, 959,188.80 and 190,170.48

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Solution

The fourth proportional to 639,570.64, 959,188.80 and 190,170.48 is: 285,206.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,570.64 : 959,188.80 = 190,170.48 : x
  2. Step 2: Convert to fraction form
    639,570.64/959,188.80 = 190,170.48/x
  3. Step 3: Cross multiply
    639,570.64x = 959,188.80 × 190,170.48
  4. Step 4: Simplify right side
    639,570.64x = 182,409,394,506.62
  5. Step 5: Solve for x
    x = 182,409,394,506.62/639,570.64
  6. Step 6: Final answer
    x = 285,206.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.